WO2003041307A3 - Photonic constant envelope rf modulator - Google Patents

Photonic constant envelope rf modulator Download PDF

Info

Publication number
WO2003041307A3
WO2003041307A3 PCT/US2002/032335 US0232335W WO03041307A3 WO 2003041307 A3 WO2003041307 A3 WO 2003041307A3 US 0232335 W US0232335 W US 0232335W WO 03041307 A3 WO03041307 A3 WO 03041307A3
Authority
WO
WIPO (PCT)
Prior art keywords
optical signal
signal
photonic
constant envelope
modulator
Prior art date
Application number
PCT/US2002/032335
Other languages
French (fr)
Other versions
WO2003041307A2 (en
Inventor
William W Anderson
Denis T Rampton
Original Assignee
Lockheed Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lockheed Corp filed Critical Lockheed Corp
Publication of WO2003041307A2 publication Critical patent/WO2003041307A2/en
Publication of WO2003041307A3 publication Critical patent/WO2003041307A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H04B10/548—Phase or frequency modulation
    • H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
    • H04B10/5563—Digital frequency modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5053—Laser transmitters using external modulation using a parallel, i.e. shunt, combination of modulators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

A system for performing photonic constant envelope modulation utilizing a frequency shifted optical signal and a pure phase modulated optical signal. A coupler superposes the pure phase modulated signal and the frequency shifted optical signal. A set of detectors generates a photocurrent signal based on the superposed signals. A splitter generates a first optical signal and a second optical signal, wherein each represents nominally one half of an input optical signal. A filter, coupled to the set of detectors, is operable to remove a DC current from the photocurrent signal.
PCT/US2002/032335 2001-11-08 2002-10-10 Photonic constant envelope rf modulator WO2003041307A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/986,320 US20030193705A1 (en) 2001-11-08 2001-11-08 Photonic constant envelope RF modulator
US09/986,320 2001-11-08

Publications (2)

Publication Number Publication Date
WO2003041307A2 WO2003041307A2 (en) 2003-05-15
WO2003041307A3 true WO2003041307A3 (en) 2003-08-28

Family

ID=25532300

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/032335 WO2003041307A2 (en) 2001-11-08 2002-10-10 Photonic constant envelope rf modulator

Country Status (2)

Country Link
US (1) US20030193705A1 (en)
WO (1) WO2003041307A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7062115B1 (en) 2004-08-25 2006-06-13 Lockheed Martin Corporation Enhanced photonics sensor array
US7898464B1 (en) 2006-04-11 2011-03-01 Lockheed Martin Corporation System and method for transmitting signals via photonic excitation of a transmitter array
KR20120068337A (en) * 2010-12-17 2012-06-27 한국전자통신연구원 Method and apparatus for transmitting and receiving coherent optical ofdm
EP2813010B1 (en) * 2012-02-07 2016-01-13 Telefonaktiebolaget L M Ericsson (publ) Photonic rf generator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467266A2 (en) * 1990-07-18 1992-01-22 Fujitsu Limited Direct modulation phase shift keying (DM-PSK) transmission system
EP0564075A1 (en) * 1992-02-25 1993-10-06 Nortel Networks Corporation Continuous phase FSK modulated optical transmission system with local osciallator control

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH678108A5 (en) * 1987-04-28 1991-07-31 Wild Leitz Ag
NL8800067A (en) * 1988-01-12 1989-08-01 Nederland Ptt METHOD AND APPARATUS FOR THE, IN A COHERENTALLY OPTICAL COMMUNICATION SYSTEM WITH HETERODYNE DETECTION, ON-SENSE COMPENSATION OF PHASE NOISE FROM SEND AND LOCAL LASER.
JPH01206283A (en) * 1988-02-13 1989-08-18 Brother Ind Ltd Optical heterodyne measuring apparatus
DE19522262C2 (en) * 1995-06-20 1997-05-22 Zeiss Carl Jena Gmbh Heterodyne interferometer arrangement
US5694216A (en) * 1996-04-25 1997-12-02 University Of Central Florida Scanning heterodyne acousto-optical interferometers
US5767972A (en) * 1996-06-04 1998-06-16 Zygo Corporation Method and apparatus for providing data age compensation in an interferometer
DE19637777C1 (en) * 1996-09-17 1997-11-20 Leica Mikroskopie & Syst Method of error correction for heterodyne transformer
US6850712B1 (en) * 2000-05-31 2005-02-01 Lucent Technologies Inc. Optical fiber transmission system with polarization multiplexing to reduce stimulated brillouin scattering
US6487004B1 (en) * 2000-08-09 2002-11-26 The United States Of America As Represented By The Secretary Of The Navy Optical image reject down converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467266A2 (en) * 1990-07-18 1992-01-22 Fujitsu Limited Direct modulation phase shift keying (DM-PSK) transmission system
EP0564075A1 (en) * 1992-02-25 1993-10-06 Nortel Networks Corporation Continuous phase FSK modulated optical transmission system with local osciallator control

Also Published As

Publication number Publication date
US20030193705A1 (en) 2003-10-16
WO2003041307A2 (en) 2003-05-15

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